diff --git a/src/Avalonia.Visuals/Rendering/ICustomSimpleHitTest.cs b/src/Avalonia.Visuals/Rendering/ICustomSimpleHitTest.cs
index f71f9879e6..354a344ffe 100644
--- a/src/Avalonia.Visuals/Rendering/ICustomSimpleHitTest.cs
+++ b/src/Avalonia.Visuals/Rendering/ICustomSimpleHitTest.cs
@@ -11,6 +11,7 @@ namespace Avalonia.Rendering
     /// </summary>
     public interface ICustomSimpleHitTest
     {
+        /// <param name="point">The point to hit test in global coordinate space.</param>
         bool HitTest(Point point);
     }